Truss



C. ELEMAN.

muss. APPLICATION FILED APR.2, 1918- Patented Nov. 30, 1920.

- W INVENTOR. W Aifiij UNITED STATES CHARLES ELEMAN, OF CHICAGO,ILLINOIS.

muss.

Specification of Letters Patent. Patented NOV. 30, 1920.

Application filed April 2. 1918. Serial No. 226,187.

To all whom it may concern:

Be it known that I, CHARLES ELEMAN, a citizen of the United States,residing in the city of Chicago, in the county of Cook and State ofIllinois, have invented new and useful Improvements in Trusses, of whichthe following is a specification.

- This invention relates to trusses and has particular reference towooden roof trusses and the like. I

One of the objects of this invention resides in. the provision of woodtruss which is low in cost of material and construction; one which canreadily be built in the field or site of installation.

Another object of this invention is a wood truss which can be built froma number of light wood members.

WVith these and other objects in view my invention consists in the novelconstruction, combination, and relative position of the parts andmembers shown in the accompanying drawings, hereinafter described, andparticularly pointed out in the appended claim.

Referring to the drawing in which like reference characters indicatelike or corre sponding parts:

- Figure 1 is an elevation of my improved truss. Fig. 2 is a crosssection taken on line 2-2 of Fig. 1. Fig. 3 is an elevation taken online 3-3 of Fig. 2, showing the center system of members indicated alsoby C in Fig. 2.

Fig. a, is an enlarged detail of the framing at points It and S in theintermediate system of members B looking in direction of -lal in Fig. 2,and Fig. 5, is also an enlarged detail of the framing at points T and Uin such intermediate system of members B. In

the drawings, A indicates the outer system of members: The truss issymmetrical about the center line 22.

'Referringto the drawings which disclose a form of truss constructionand arrangement embodying my invention, and here shown as comprisingfive sections or systems of framing or members, I provide a centersystem C which comprises the two end horizontal abutment members 10 andthe angularly'disposed compression members 11, 12, 13, and 14 arrangedfor end to end abutment with each other and with said abutment members10.

Within the top chord of the truss and between top abutting ends of saidmembers 11, 12, 13, and 1 1, I provide the members 15 and 16.

Inasmuch as both systems A and B are alike, I shall confine mydescription to one system of each.

The intermediate system B, comprises in the lower chord the member 17which extends from one end of the truss to the other or the full lenggthL. The upper chord member of system comprises the four members 18 and19. One end of member 18 rests upon the lower chord 17 and the otherabuts with the member 20. One end of member 19 abuts with the oppositeface of member 20 and the other end abuts with the end of itscomplementary member 19 at the center of the truss. The lower ends ofthe members 20 are inserted a few inches into the lower chord members17. A tie rod 21 extends from the bottom .to the top of the lower andupper chords and is placed between the faces of the systems A and B. I

The outer system A, comprises in the lower chord, the member 22 whichextends from one end of the truss to the other, or the full length L.The upper chord comprises members 23 and 2 1 arranged with abutting.ends and running parallel with the intermediate similar members 18 and19. Suitable bolts 25 and nails are provided for securing the members ofthe various systems together. Bent steel straps 26 extend from the faceof one system A across the end of the truss to the face of the othersystem A.

It is obvious that the members shown and described may be made in anysuitable lengths and spliced where desired.

It is thought that the foregoing description and illustrations clearlydisclose the construction and operation of the invention, hence a moreextended explanation is omitted.

I claim In a truss, and in combination, a pair of built-up sectionshaving upper and lower chords and members in tension only connectingsaid chords, 5 center section comprising a, plurality of angularlydisposed abutting compression members 11, 12, 13 and 14, and horizontal.end abutment members 10 con fining said compression members, and members15 and 16 extending betweenthe upper ends of said compression memberssubstantially as shown and described.

CHARLES 'ELEMAN.

